Het Gravensteen (Castle of the Counts)

Overlooking the city centre is the imposing, stone-walled Het Gravensteen. With some parts of the castle dating back to the 11th century, it has undergone many uses starting off as a seat for the counts of Flanders and remaining the city’s main military stronghold until the 14th century. It was later used as the city’s jail and a cotton mill. As well as appreciating the impressive architecture, visitors can also visit the Museums of Torture Instruments and Weapons.